Abstract
The relationship between isotopic composition and concentration of ambient CO2 in a canopy and its associated convective boundary layer was modeled. The model divides the canopy and convective boundary layer into several layers. Photosynthesis, respiration, and exchange between each layer can be simulated by matrix equations. This simulation can be used to calculate recycling; defined here as the amount of respired CO2 re-fixed by photosynthesis relative to the total amount of respired CO2. At steady state the matrix equations can be solved for the canopy and convective boundary layer CO2 concentration and isotopic profile, which can be used to calculate a theoretical recycling index according to a previously developed equation. There is complete agreement between simulated and theoretical recycling indices for different exchange scenarios. Recycling indices from a simulation of gas exchange between a heterogeneous vegetation canopy and the troposphere also agreed with a more generalized form of the theoretical recycling equation developed here.
| Original language | English |
|---|---|
| Pages (from-to) | 179-192 |
| Number of pages | 14 |
| Journal | Ecological Modelling |
| Volume | 154 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - Aug 15 2002 |
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Keywords
- Carbon dioxide
- Carbon-13
- Convective boundary layer
- Gas exchange
- Recycling
- Troposphere
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Ecological Modeling
- Ecology
Cite this
Carbon isotope composition of ambient CO2 and recycling : A matrix simulation model. / Sternberg, Leonel; DeAngelis, Donald L.
In: Ecological Modelling, Vol. 154, No. 1-2, 15.08.2002, p. 179-192.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Carbon isotope composition of ambient CO2 and recycling
T2 - A matrix simulation model
AU - Sternberg, Leonel
AU - DeAngelis, Donald L.
PY - 2002/8/15
Y1 - 2002/8/15
N2 - The relationship between isotopic composition and concentration of ambient CO2 in a canopy and its associated convective boundary layer was modeled. The model divides the canopy and convective boundary layer into several layers. Photosynthesis, respiration, and exchange between each layer can be simulated by matrix equations. This simulation can be used to calculate recycling; defined here as the amount of respired CO2 re-fixed by photosynthesis relative to the total amount of respired CO2. At steady state the matrix equations can be solved for the canopy and convective boundary layer CO2 concentration and isotopic profile, which can be used to calculate a theoretical recycling index according to a previously developed equation. There is complete agreement between simulated and theoretical recycling indices for different exchange scenarios. Recycling indices from a simulation of gas exchange between a heterogeneous vegetation canopy and the troposphere also agreed with a more generalized form of the theoretical recycling equation developed here.
AB - The relationship between isotopic composition and concentration of ambient CO2 in a canopy and its associated convective boundary layer was modeled. The model divides the canopy and convective boundary layer into several layers. Photosynthesis, respiration, and exchange between each layer can be simulated by matrix equations. This simulation can be used to calculate recycling; defined here as the amount of respired CO2 re-fixed by photosynthesis relative to the total amount of respired CO2. At steady state the matrix equations can be solved for the canopy and convective boundary layer CO2 concentration and isotopic profile, which can be used to calculate a theoretical recycling index according to a previously developed equation. There is complete agreement between simulated and theoretical recycling indices for different exchange scenarios. Recycling indices from a simulation of gas exchange between a heterogeneous vegetation canopy and the troposphere also agreed with a more generalized form of the theoretical recycling equation developed here.
KW - Carbon dioxide
KW - Carbon-13
KW - Convective boundary layer
KW - Gas exchange
KW - Recycling
KW - Troposphere
UR - http://www.scopus.com/inward/record.url?scp=0037102642&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037102642&partnerID=8YFLogxK
U2 - 10.1016/S0304-3800(02)00055-8
DO - 10.1016/S0304-3800(02)00055-8
M3 - Article
AN - SCOPUS:0037102642
VL - 154
SP - 179
EP - 192
JO - Ecological Modelling
JF - Ecological Modelling
SN - 0304-3800
IS - 1-2
ER -